looks like dodo to me, 3 and 4 would have to suck. It lot of time for something that is just not that great. You could do better taking a Offy 2, 1 Barrel intake manifold and converting to 2, 2 barrel flanges.View attachment 1715389193
Not arguing, just point this out. The intake in question is very similar to the Offy 2 one barrel. Only difference I see is the single plenum VS the double plenum. The runners are shaped virtually the same. I would like to see some data on the intake. Not that it matters. If that's a "one off" as Dan says and the only other thing is 3D programs, then getting someone to make one would be a significant cost, which cuts me out. Beside, I have the Offy and it's what I will use.